Window: IList<> implementation

[viceroypenguin]

This PR adds an IList<> implementation of the Window operator.

Fixes #419

// * Summary *

BenchmarkDotNet=v0.13.5, OS=Windows 11 (10.0.22621.1702/22H2/2022Update/SunValley2)
12th Gen Intel Core i7-12700H, 1 CPU, 20 logical and 14 physical cores
.NET SDK=8.0.100-preview.3.23178.7
  [Host] : .NET 7.0.5 (7.0.523.17405), X64 RyuJIT AVX2

Method	source1	N	Mean	Error	StdDev	Gen0	Gen1	Allocated
WindowCount	Syste(...)nt32] [47]	10000	9.149 ns	0.0447 ns	0.0418 ns	0.0025	0.0000	32 B
WindowCount	Syste(...)nt32] [62]	10000	190,218.615 ns	1,082.6772 ns	904.0845 ns	82.5195	0.2441	1038192 B
WindowCopyTo	Syste(...)nt32] [47]	10000	218,147.174 ns	1,371.7392 ns	1,145.4644 ns	88.8672	48.8281	1117984 B
WindowCopyTo	Syste(...)nt32] [62]	10000	287,875.178 ns	3,067.1661 ns	2,718.9628 ns	99.1211	58.1055	1249777 B
WindowElementAt	Syste(...)nt32] [47]	10000	45.165 ns	0.4497 ns	0.3986 ns	0.0108	0.0001	136 B
WindowElementAt	Syste(...)nt32] [62]	10000	153,205.796 ns	1,012.1909 ns	946.8040 ns	66.1621	0.2441	832376 B

Code

#load "BenchmarkDotNet"

void Main()
{
	RunBenchmark();
}

public IEnumerable<object[]> EnumerableArguments()
{
	foreach (var i in new[] { 10_000, })
	{
		yield return new object[]
		{
			Enumerable.Range(1, i).Where(_ => true),
			i,
		};
		yield return new object[]
		{
			Enumerable.Range(1, i).ToList(),
			i,
		};
	}
}

[Benchmark]
[ArgumentsSource(nameof(EnumerableArguments))]
public void WindowCount(IEnumerable<int> source1, int N)
{
	_ = source1.Window(20).Count();
}

[Benchmark]
[ArgumentsSource(nameof(EnumerableArguments))]
public void WindowCopyTo(IEnumerable<int> source1, int N)
{
	_ = source1.Window(20).ToArray();
}

[Benchmark]
[ArgumentsSource(nameof(EnumerableArguments))]
public void WindowElementAt(IEnumerable<int> source1, int N)
{
	_ = source1.Window(20).ElementAt(8_000);
}

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.04 🎉

Comparison is base (08e8016) 87.99% compared to head (0b7bcc9) 88.04%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #427      +/-   ##
==========================================
+ Coverage   87.99%   88.04%   +0.04%     
==========================================
  Files         242      242              
  Lines        7498     7526      +28     
  Branches     1725     1730       +5     
==========================================
+ Hits         6598     6626      +28     
  Misses        462      462              
  Partials      438      438              

Impacted Files	Coverage Δ
Source/SuperLinq/Window.cs	100.00% <100.00%> (ø)

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